<script setup>
import { ref, getCurrentInstance, onMounted, reactive } from 'vue';
import * as echarts from 'echarts';
const { proxy } = getCurrentInstance();

 

const getImgUrl = (user) => {
  return new URL(`../assets/images/${user}.png`, import.meta.url).href;
};
const tableData = ref([
    {
      name: "Java",
      todayBuy: 100,
      monthBuy: 200,
      totalBuy: 300,
    },
    {
      name: "Python",
      todayBuy: 100,
      monthBuy: 200,
      totalBuy: 300,
    }
])
const countData=ref([])
const ChartDAta = ref([])
const observer=ref(null)
const tableLabel = ref({
    name: "课程",
    todayBuy: "今日购买",
    monthBuy: "本月购买",
    totalBuy: "总购买",
})
//这个是折线图和柱状图 两个图表共用的公共配置
//echarts官网
const xOptions = reactive({
      // 图例文字颜色
      textStyle: {
        color: "#333",
      },
      legend: {},
      grid: {
        left: "20%",
      },
      // 提示框
      tooltip: {
        trigger: "axis",
      },
      xAxis: {
        type: "category", // 类目轴
        data: [],
        axisLine: {
          lineStyle: {
            color: "#17b3a3",
          },
        },
        axisLabel: {
          interval: 0,
          color: "#333",
        },
      },
      yAxis: [
        {
          type: "value",
          axisLine: {
            lineStyle: {
              color: "#17b3a3",
            },
          },
        },
      ],
      color: ["#2ec7c9", "#b6a2de", "#5ab1ef", "#ffb980", "#d87a80", "#8d98b3"],
      series: [],
})

const pieOptions = reactive({
  tooltip: {
    trigger: "item",
  },
  legend: {},
  color: [
    "#0f78f4",
    "#dd536b",
    "#9462e5",
    "#a6a6a6",
    "#e1bb22",
    "#39c362",
    "#3ed1cf",
  ],
  series: []
})

const getTableData =async () => { 
  const data = await proxy.$api.getTableData();
  tableData.value = data.tableData;
}
const getCountData =async () => {
  const data = await proxy.$api.getCountData();
  countData.value = data;
}
const getChartData = async () => {
  const { orderData,userData,videoData } = await proxy.$api.getChartData();
  //对第一个图标进行x轴和series赋值
  xOptions.xAxis.data = orderData.date;
  xOptions.series = Object.keys(orderData.data[0]).map(val => ({
    name: val,
    data: orderData.data.map(item => item[val]),
    type: 'line'
  }))
  const oneEchart = echarts.init(proxy.$refs['echart']);
  oneEchart.setOption(xOptions);
  //对第二个表格进行渲染

  xOptions.xAxis.data = userData.map(item => item.date);
  xOptions.series = [
    {
      name: '新增用户',
      data: userData.map(item => item.new),
      type:'bar'
    },
    {
      name: '活跃用户',
      data: userData.map(item => item.active),
      type:'bar'
    },
  ]
  const twoEchart = echarts.init(proxy.$refs['userEchart']);
  twoEchart.setOption(xOptions);

  //对饼状图进行渲染
  pieOptions.series = [
    {
      data: videoData,
      type:'pie'
    }
  ]
  const threeEchart = echarts.init(proxy.$refs['videoEchart']);
  threeEchart.setOption(pieOptions);

  //监听页面的变化
  //如果监听的容器大小发生变化 改变了以后 会执行回调函数
  observer.value = new ResizeObserver((en) => {
    oneEchart.resize();
    twoEchart.resize();
    threeEchart.resize();
  })

  //容器存在
  if (proxy.$refs['echart']) {
    observer.value.observe(proxy.$refs['echart'])
  }
}
onMounted(() => {
  getTableData();
  getCountData();
  getChartData();
});
</script>

<template>
  <el-row class="home" :gutter="20">
    <el-col :span="8" style="margin-top: 20px;">
      <el-card shadow="hover">
        <div class="user">
          <img :src="getImgUrl('user')" class="user"/>
          <div class="user-info">
            <p class="user-info-admin">Admin</p>
            <p class="user-info-p">超级管理员</p>
          </div>
        </div>
          <div class="login-info">
            <p>上次登录时间:<span>2022-01-01 12:00:00</span></p>
            <p>上次登录地点:<span>北京</span></p>
          </div>
      </el-card>

      <el-card shadow="hover" class="user-table">
        <el-table :data="tableData">
          <el-table-column
            v-for="(val,key) in tableLabel"
            :key="key"
            :prop="key"
            :label="val"
          >
            
          </el-table-column>
        </el-table>
      </el-card>
    </el-col>
    <el-col :span="16" style="margin-top: 20px;">
      <div class="num">
        <el-card :body-style="{display:'flex',padding:0}"v-for="item in countData" :key="item.name">
        <component :is="item.icon" class="icons" :style="{background:item.color}"></component>
        <div class="detail">
          <p class="num">￥{{item.value}}</p>
          <p class="txt">￥{{item.name}}</p>
        </div>
      </el-card>
      </div>
      <el-card class="top-echart">
        <div ref="echart" style="height: 280px;"></div>
      </el-card>
      <div class="graph">
         <el-card>
          <div ref="userEchart" style="height: 240px;"></div>
         </el-card>
         <el-card>
          <div ref="videoEchart" style="height: 240px;"></div>
         </el-card>
      </div>
    </el-col>
  </el-row>
</template>

<style scoped lang="less">
.home {
    height: 100%;
    overflow: hidden;
    .user {
      display: flex;
      align-items: center;
      border-bottom: 1px solid #ccc;
      margin-bottom: 20px;
      img {
        width: 150px;
        height: 150px;
        border-radius: 50%;
        margin-right: 40px;
      }
      .user-info{
        p{
          line-height: 40px;
        }
        .user-info-p{
          color: #999;
        }
        .user-info-admin{
          font-size: 35px;
        }
      }
    }
    .login-info{
      p{
        line-height: 30px;
        font-size: 14px;
        color: #999;
        span{
          color: #666;
          margin-left: 60px;
        }
      }
    }
    .user-table{
      margin-top: 20px;
    }
    .num{
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      .el-card{
        width: 32%;
        margin-bottom: 20px;
      }
      .icons{
        width: 80px;
        height: 80px;
        font-size: 30px;
        text-align: center;
        line-height: 80px;
        color: #fff;
      }
      .detail{
        margin-left: 15px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        .num{
          font-size: 30px;
          margin-bottom: 10px;
        }
        .txt{
          font-size: 15px;
          text-align: center;
          color:#999;
        }
      }
    }
    .graph{
      margin-top: 20px;
      display: flex;
      justify-content: space-between;
      .el-card{
        width: 48%;
        height: 260px;
      };
    }
  }
</style>